Antn-biction beabing



Spn z5', 1928. 1,685,612 J. F. OCONNOR ANTIFRICTION BEARING Filed Aug. 29, 192'4 7 ff 3.5/ A@ p Patented Sept. 25, 1928.

,PATE

Y "f i 1,685,612

NT OFFICE.

'JoIIN r. ooomvoa, `or CHICAGO, ILLINOIS, As'sIeNon, BY mesma ASSIGNMENTS, To

\ w.l n. imma, INC., A CORPORATION or DELAWARE.

ANTIFRICTION BEARING. t

This invention relates to improvements in anti-friction bearings.

One object/of the invention' is .to providey a Simple, practical and, relatively inexpensive roller." bearing, especially adaptedfor railway-car side bearings,;in which the parts are so `arranged that the anti-friction element is automatically returned to normal centered positionunder the influence of gravity when `free from theload.`

.Another object iste ,provide an anti-fric! tion bearing ofthis character, including a rocker having a support adapted to normally bodilysupport an anti-frictionroller during .15.the rocking movement of the` rocker within certain lirn1ts,.such roller being held against relative movement with respect to the rocker .during this period, together with independ- :ent bearing means Which are provided tor `receiving thetrunnions ofthe roller, and supporting the saine for unlimited `rotation when the rocker is moved beyond the limits yofthe normal rocking movement thereof.

Other and further objects ofthe invention will more clearly and fully appear from the description/and claims hereinafter following.

`In the drawing forming a part of this specification, Figure 1 is a vertical, partial sectional vievvtaken through the ends of the ybody and truck ,holsters of a railway car showing my invention in connection therewith.- FigureQ is a sectional view ofthe inventionon line 2&2 of Figure 1. `And Figure 3 is a side elevational, detail view of `the rocker used in ,connection with my invention. n Referring to the drawings, A. indicates the i underside of a body bolster, and B the upper side of theccorresponding spaced truck bolster. My improved side bearing is shown as tl'pplied to the, truck bolsterand comprises broadly,- amountingin the form of a housing C,an anti-frictiorielement D, and a rocker E "to which the anti-friction element is ,connected. ,l V

4.5 4 Y, The housingr C is provided with `curvedfend walls 5. and Hanges 6, adapted to be secured `to .tbebearing plate 7 by" means of rivets 8,

the bearing plates in turn being` secured to the bolster B,by rineans ofrivets 9. The

`housing C hasits, opposite side Walls off-set so as to form guildes 10, the upper portions of such guides being arranged. to providelongitudinally separated, semi-circular bearing Y seats. 11,- for the accommodation of the trun` -nionspf the `anti-,friction element D infcertain positions of theparts, the guides 1() serving to limit the rocking movement of the roekerE as will presently appear.

The rockeror supporting member E is provided With side standards 12, connected at their lower ends by anarcuate weborwall13,a portion of which is offset to provide a supportingseat 14, adapted-to accommodate the lperiphery of the `anti-friction-roller D when placed thereon; The lower curved surface of the rocker E, asi-indicated at 15, is adapted to rock upon the bearing plate 7. The outer sides of the rocker yE are preferably provided with segmental extensions 16, arrangedlto be disposed Withinthe guides l10, and co-operating therewith tolimit ythe rocking movement of the rocker LE.

The standards 12 of the rocker Eare provided` with bearing openings 17, tok accommodate the trunni'ons 18 of the antifriction element D, r such openings being somewhat elongated so as to provide limited play of the -trunnions 18 radially with respect to the curved bearing `surface of the rocker E as clearly shownin the drawings.' The trunnions 18 extend beyond the standards 12 a suitable distance, theends of which are normally disposed in the curved bearing portions 19 ofthe extensions 16, `the trunnions being so arranged that atthe limit of the rocking movement of the rocker as permitted by the abutment of the extensions 16 and the guides 10,`the trunnions move onto the bearingseats 11,y this movement being permitted by `the limited play of the trunnions 18 lin the bearing openings 11, and serving to move the roller free of the support 141. y .I

' In operation of the device, assuming that the roller 'and rocker` are moving .toward the lrightlas shown. in ldotted linesin Figure 1,

during the normalposition andthe normal portion of travel, the rollerand ,rocker are held against relative movement, and move `in unisonytransmitting the load bodily through the roller D and rocker to the bearing plate 7, this rocking movement continuing until the adjacent surfaces of the extensions 16 abut against the guides 10, whereupon further rocking movement is prevented. Upon further relative movement of the bolster parte beyond the limits of the rocking movement ofthe rocker, the Vperiphery of'theroller will be moved out of engagement with the support 14, andthe trunnions 18will come into engagement withthe 'bearinggsats 11, thereby transferring thepsupport ofthe roller to the independent bearings so as to permit unlimit-v ed rotation thereof. VVhenthe load isreleased fronrtlie roller, `the l roeker, diieto *itsl `unbalanced condition, will vreturn tov-its nor-- n'ial position., carrying the roller with it, during which movement the trunnionslS return to the lower ends of the openings 17, and the roller will again bear' upon the 'supporti-ng seat 14, so as to tiansmit Vthe load bodily th rough the roller! totlifebearingplate 7.

the above described arrangement independent bearing means are provided vvliich `are automatically engaged. during the movementsy of the vparts vforsupporting;thefrllei `for unlimited rotation, andthevrocker of course `acts as la coiinterlbalance for the roller, ,aswell as a positive support therefor.

AIt'vvill alsov be notedthat'thel partsfat all ltimes, except at the limit Vof tlie movement of the roclrei,.opcrate as a unit, and the load is 'bi'niition' ivith relatively movable bearing members; of a rocker 'disposed therebetween;

andl antifriction element supported by said rocker, said element andrvsaid rocker being `connected and arranged to movev as annit yduring a portion of the-"rockingv movement,

said element and roeker'bei'ngconstructed to permitmovement of said element o'ut'of engagement of the support alforded by vsaid rocker; and means independent' of said rocker arranged to support said element'for rotation when said element is removed from v i n v 'supporting engagement with saidrocker.`

QQ In" an anti-frictionbearing, r4the 'com- `bination with relatively movable 'bearing members; of a rocker Adisposedtherebetween;

of means for limiting they movement4 ofsaid rocker;r an vvanti-'frictionv element; and means operatively connecting'said element and said rocker` said meansfbeing 'arranged to retain said element' against `movement relative to l'said rocker -atallpoints Within the vlimits "of its' rocking movement 'and' means inde- `pendt-znt of said'rockei" 'andi' arranged to sup- "p'oi't said element-"for r'otation'at points ibeyond'the limits of movement of'the rocker.

'1 3. In an `'antifriction bearing` ythe combination with" relatively movable bearing` members; ofv av rocking"self-centering supporting lmember interposed therebetween; vbearingmeans independent ,of said supportingi member" and spaced with" reference' there- -tog anti-friction element normally snp- Y 'ported on Said supporting member andcen tered thereby, said supporting meinbenbeing arranged to transfer the supportlof said antifriction element to said independent bearing Hwa-ne dui-'insa Partien etitsmovemnr aan@ v ineansl conneetfing isaid; anti-friction element with .said rocking` supporting member.

5.4. .Inraniantbfriction bearing, the combination with a relatively movable bea-ring Vmembers; of a *roeler interposed therebetween, and havinga curved .bearing portion, said rocker ,being provided ,'vvithv4 spapeed standards having` elongated journaly bearings therein, said, bearings radially disposed With respect tothe curved portioriof said rocher.; an' anti-friction element having trunnions disposed in said ,jouijnalfbe'arings, 'saidl element'beilng 'a'daptedtonormally be -supported'by said rocker means for .limitingfthe movement of said 'rockerlgan'd` indel pendent bearing' seatsl 'arranged tojfreceive the trunnions of lsaid element `and Vsupport the' same'for rotation beyond the 'of its rocking movement. l

5."In` an antiffrictiony bearingghthel coniybinationli'vith va housingfhaving 'a bearing surface 5. ofa rocker disposedl upon said. beart'ing vsurface and adapted't'o'lrck 'thereon Asaid rocker being' provided'ivith acnrvedlseatf; ,an anti-friction roller loosely disposed in seatand havingv its-circumferential y'tread 9.5 bearing against'. said` seat, said "roelgei" and reller being Vso vconstructed that movementflof theroclc'er and roller is in Li-nioiifora limited (instance i@ taberna@ 0f @aanpassen and. thereafter separation'of saidtread from bear- 100 ing engagement -vvith said seat, is .l permitted, said roller being provided With'LaXially` arranged `trnnnilons; and 'iixed `bearing.fme'ansV independent of said Arocker ,adapted `fortlieY "reception of Asaid trunnions to support said |05 roller l.for rotation about its .ivhenfthe roller isfree of bear'ing'contactwith said seat.

{ 6. In annanti-friction bearing, the A,coniyrbination with, a retainer havingr av bearing surface; of a. "self-centering rocker ,mounted "110 for rocking. eninageiiient` with .said i bearing surface; an antifrietion elementl'onneeted vvith said rocker, and i'naintained in centered position thereby, lsaid rocker being provided with trunnions'; and bearing means inde- :115 1pen'der'it ofl said rocker andarranged at foppo# Vsite sides thereof ailaptedl forth'e reception of the trunnions on said anti-friction element `upon movement of said rocker` a predeter- 'minedf distance to .either side of central `lposi- '12o tion.' A` .y Y' i' "7."In an anti-frictionbearing including'a Vretainer provided With side Walls having vertically disposed guide means proyided with oppositely arranged bearing seats of "a `125 rocker havingrv a 'supportingr 4seat thereonl and Y provided Wah' extensions adapted. tof/@Oeps *ei-ate with said guide means to limit rocking -'movement of said rocker'gjan antifriction'ele- 'nient connected Withsaid rocker and "non "13u iii) i ferential tread bearing on Vsaid seat, said anti friction element beingr provided with axial` projections adapted for engagement with the bearing seats in said guide means upon movement of said rocker to its extreme positions to either side of central position, the connecting .means being constructed to permit separation of the circumferential treed of said anti-friction element from said seat at the 10 limitation of movement of said rocker.

In witness that I claim the foregoing I have hereunto subscribed my name this 26 day of August, 1924.

JOHN F. oooNNoR. 

